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From: "daffra.claudio at gmail dot com" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug libc/26022] valgrind gives me error when fwprintf in stderr
Date: Thu, 04 Jun 2020 09:45:19 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D26022

--- Comment #4 from Claudio Daffra <daffra.claudio at gmail dot com> ---
file to reproduce valgrind error

  #include <stdio.h>
  #include <wchar.h>

  int main ( void )
  {
   return 0 ;
  }

error message

  =3D=3D1596=3D=3D Memcheck, a memory error detector
  =3D=3D1596=3D=3D Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward=
 et al.
  =3D=3D1596=3D=3D Using Valgrind-3.16.0.GIT and LibVEX; rerun with -h for =
copyright
info
  =3D=3D1596=3D=3D Command: ./prova
  =3D=3D1596=3D=3D=20
  =3D=3D1596=3D=3D=20
  =3D=3D1596=3D=3D HEAP SUMMARY:
  =3D=3D1596=3D=3D     in use at exit: 13,697 bytes in 158 blocks
  =3D=3D1596=3D=3D   total heap usage: 172 allocs, 14 frees, 18,441 bytes a=
llocated
  =3D=3D1596=3D=3D=20
  =3D=3D1596=3D=3D LEAK SUMMARY:
  =3D=3D1596=3D=3D    definitely lost: 0 bytes in 0 blocks
  =3D=3D1596=3D=3D    indirectly lost: 0 bytes in 0 blocks
  =3D=3D1596=3D=3D      possibly lost: 4,392 bytes in 5 blocks
  =3D=3D1596=3D=3D    still reachable: 9,305 bytes in 153 blocks
  =3D=3D1596=3D=3D         suppressed: 0 bytes in 0 blocks
  =3D=3D1596=3D=3D Rerun with --leak-check=3Dfull to see details of leaked =
memory
  =3D=3D1596=3D=3D=20
  =3D=3D1596=3D=3D For lists of detected and suppressed errors, rerun with:=
 -s
  =3D=3D1596=3D=3D ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 4 f=
rom 4)
  claudio@RastanX Documents %=20

compiler version

  claudio@RastanX Documents % gcc -v

  Configured with: --prefix=3D/Library/Developer/CommandLineTools/usr
--with-gxx-include-dir=3D/Library/Developer/CommandLineTools/SDKs/MacOSX.sd=
k/usr/include/c++/4.2.1
  Apple clang version 11.0.3 (clang-1103.0.32.59)
  Target: x86_64-apple-darwin19.5.0
  Thread model: posix
  InstalledDir: /Library/Developer/CommandLineTools/usr/bin

s.o : macOS 10.15.5 (19F96)


with --leak-check=3Dfull valgrind gives me many other errors.
this occurs in macosx only,nothing to do with streams.

--=20
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